Measurement of power quality in low-voltage network

This paper deals with power quality (PQ) problem in low-voltage network. It is focused on voltage variations, unbalance, fluctuation, harmonic and their impact on customers. The introduction concerns with general resources and impacts of the deterioration PQ in networks. A measurement was focused on consumers in the Czech Republic who are supplied by the power line from the Slovak Republic. Next part was focused on processing measurement values in this point with using PQ analyser. This values were used for creating simulation. The paper includes initial recommendations for improve PQ in this problematic area.